getting below issue while building on Mac.. please help
go build myapp.go
/usr/local/go/src/crypto/tls/cipher_suites.go:18:2: cannot find package "golang_org/x/crypto/chacha20poly1305" in any of:
/usr/local/go/src/golang_org/x/crypto/chacha20poly1305 (from $GOROOT)
/Users/xyz/go/src/golang_org/x/crypto/chacha20poly1305 (from $GOPATH)
/usr/local/go/src/crypto/tls/key_agreement.go:20:2: cannot find package "golang_org/x/crypto/curve25519" in any of:
/usr/local/go/src/golang_org/x/crypto/curve25519 (from $GOROOT)
/Users/xyz/go/src/golang_org/x/crypto/curve25519 (from $GOPATH)
/usr/local/go/src/net/http/h2_bundle.go:46:2: cannot find package "golang_org/x/net/http2/hpack" in any of:
/usr/local/go/src/golang_org/x/net/http2/hpack (from $GOROOT)
/Users/xyz/go/src/golang_org/x/net/http2/hpack (from $GOPATH)
/usr/local/go/src/net/http/h2_bundle.go:47:2: cannot find package "golang_org/x/net/idna" in any of:
/usr/local/go/src/golang_org/x/net/idna (from $GOROOT)
/Users/xyz/go/src/golang_org/x/net/idna (from $GOPATH)
/usr/local/go/src/net/http/h2_bundle.go:48:2: cannot find package "golang_org/x/net/lex/httplex" in any of:
/usr/local/go/src/golang_org/x/net/lex/httplex (from $GOROOT)
/Users/xyz/go/src/golang_org/x/net/lex/httplex (from $GOPATH)
/usr/local/go/src/net/http/transport.go:32:2: cannot find package "golang_org/x/net/proxy" in any of:
/usr/local/go/src/golang_org/x/net/proxy (from $GOROOT)
/Users/xyz/go/src/golang_org/x/net/proxy (from $GOPATH)
/usr/local/go/src/net/interface_bsd.go:12:2: cannot find package "golang_org/x/net/route" in any of:
/usr/local/go/src/golang_org/x/net/route (from $GOROOT)
/Users/xyz/go/src/golang_org/x/net/route (from $GOPATH)
import cycle not allowed
package archive/zip
imports bufio
imports bytes
imports errors
imports runtime
imports runtime/internal/atomic
imports runtime